Barriers to routine G6PD testing prior to treatment with primaquine. by Ley, B, Thriemer, K, Jaswal, J, Poirot, E, Alam, MS, Phru, CS, Khan, WA, Dysoley, L, Qi, G, Kheong, CC, Shamsudin, UK, Chen, I, Hwang, J, Gosling, R, Price, RN